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212010023285 = 542402004657
BaseRepresentation
bin1100010101110011001…
…0000011100101110101
3202021020100021002012122
43011130302003211311
511433144031221120
6241221314325325
721213543315104
oct3053462034565
9667210232178
10212010023285
1181a05149485
1235109889845
1316cb9583028
14a39318c03b
1557aca24a25
hex315cc83975

212010023285 has 4 divisors (see below), whose sum is σ = 254412027948. Its totient is φ = 169608018624.

The previous prime is 212010023209. The next prime is 212010023287. The reversal of 212010023285 is 582320010212.

212010023285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163712488996 + 48297534289 = 404614^2 + 219767^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010023285 - 210 = 212010022261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010023287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21201002324 + ... + 21201002333.

It is an arithmetic number, because the mean of its divisors is an integer number (63603006987).

Almost surely, 2212010023285 is an apocalyptic number.

It is an amenable number.

212010023285 is a deficient number, since it is larger than the sum of its proper divisors (42402004663).

212010023285 is an equidigital number, since it uses as much as digits as its factorization.

212010023285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42402004662.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 212010023285 its reverse (582320010212), we get a palindrome (794330033497).

The spelling of 212010023285 in words is "two hundred twelve billion, ten million, twenty-three thousand, two hundred eighty-five".

Divisors: 1 5 42402004657 212010023285